Prediction of Rectus Femoris Graft Size in ACL Reconstruction

Prediction of Quadrupled Rectus Femoris Graft Diameter Using Anthropometric and Tendon Parameters

Status

Completed

Phases

Unknown

Study type

Observational

Source

ClinicalTrials.gov

Registry ID

NCT07538245

Enrollment

105

Registered

2026-04-20

Start date

2026-04-18

Completion date

2026-07-12

Last updated

2026-07-14

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Anterior Curciate Ligament

Keywords

rectus femoris graft, graft size, Anterior curciate ligament

Brief summary

This study aims to develop and validate a predictive model for estimating the diameter of a quadrupled rectus femoris tendon graft used in anterior cruciate ligament (ACL) reconstruction. By analyzing patient anthropometric characteristics and intraoperative tendon measurements, we aim to identify reliable predictors of graft size to improve preoperative planning and surgical decision-making.

Detailed description

Graft diameter is a critical determinant of success in anterior cruciate ligament (ACL) reconstruction. Smaller graft sizes have been associated with increased failure rates. While predictive models exist for hamstring tendon grafts, no validated model currently exists for rectus femoris tendon grafts. This study seeks to develop a predictive algorithm for estimating the diameter of a quadrupled rectus femoris graft using patient-specific anthropometric and tendon-related variables. Data will be collected prospectively (or retrospectively if applicable) from patients undergoing ACL reconstruction using rectus femoris tendon autografts. Statistical modeling, including multivariate regression analysis, will be used to identify independent predictors and generate a predictive formula. The study also aims to evaluate the diagnostic performance of the model in identifying clinically adequate graft sizes (≥8 mm or ≥9 mm).

Interventions

None listed

Study design

Observational model

COHORT

Time perspective

PROSPECTIVE

Eligibility

Sex/Gender

ALL

Age

18 Years to No maximum

Healthy volunteers

Inclusion criteria

* Patients aged 18 years or older * Undergoing primary ACL reconstruction * Use of rectus femoris tendon autograft * Availability of complete anthropometric and intraoperative data

Exclusion criteria

* Incomplete dataset

Design outcomes

Primary

Measure	Time frame	Description
Quadrupled rectus femoris graft diameter (mm)	Baseline	Measured intraoperatively using standard graft sizing tubes

Secondary

Measure	Time frame	Description
Prediction accuracy (difference between predicted and actual graft diameter)	Baseline	difference between predicted and actual graft diameter

Countries

Turkey (Türkiye)

Outcome results